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Final Exam 7th Grade Life Science Review Flashcards | StudBud
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Final Exam 7th Grade Life Science Review
Final Exam 7th Grade Life Science Review
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1
In what way would deer hunting affect this food web?
Less food would be available for grasshoppers
It would not affect the food web at all
The rabbit population would benefit
It would decrease the amount of vegetation eaten by deer
2
Which of the following is NOT a function of this system?
aids in movement and posture
place where blood is made
protects organs like the brain and heart
carries messages to and from the brain
3
The parents in this cross are both
purebred
homozygous
incomplete dominant
hybrid
4
Our current system of classification for living organisms classifies organisms based on
physical/anatomical similarities
size
where they live
whether they are warm or cold-blooded
5
This plant grows on the high limbs of a tree and gets more sunlight. The tree is not hurt or helped. Relationship?
competition
mutualism
commensalism
parasitism
6
Which two systems collaborate to filter waste from the blood and eliminate it from the body?
respiratory, circulatory
excretory, circulatory
respiratory, digestive
digestive, immune
7
If an insecticide reduced the number of crickets, how would this affect this food web/
It would lead to decreased competition between frogs and mice
It would lead to a decrease in rabbits and deer
It would have no real effect on the system
It would lead to increased competition between frogs and mice
8
Considered the father of the study of genetics
Mendel
Darwin
Linnaeus
Curie
9
Cats: Long hair (H), short hair (h). Probability of two heterozygous long-hair cats having short-hair kittens?
0%
50%
100%
25%
10
What is the genotype for the parent listed across the top?
purebred dominant
heterozygous
gg
yellow
11
What can we determine about the offspring from this type of reproduction
they will be genetical identical to the male parent
they will be genetically identical to the female parent
they will be genetically identical to one of the parents
they will have traits of both parents but not identical to either
12
Which is the correct order for the levels of organization?
cell-system-organism-system-organ
cells-tissue-organ-system-organism
cell-organ-tissue-system-organism
tissue-cell-organ-organism-system
13
Which systems collaborate most closely to battle pathogens that may lead to infection?
digestive, respiratory, endocrine
digestive, excretory, lymphatic
circulatory, respiratory, digestive
circulatory, lymphatic, skeletal
14
What is the initial source of energy for almost all food webs on earth?
the sun
producers
volcanic chemicals
decomposers
15
Type of reproduction shown here
asexual
mitosis
binary fission
sexual
16
Our temperate forests and Great Plains are located in the same latitudes. Why is one forested and not the other?
The plains have low quality soil
There are more animals in the plains that eat leaves so trees can't develop
the Great Plains are too high above sea level to grow trees
the plains don't receive enough rainfall to support forests
17
What level of organization is demonstrated here?
system
organ
tissue
cell
18
Why does it take much longer for taiga trees to grow to full height than temperate forest trees?
The tundra has more animals that eat the trees as they are growing
The tundra trees are less genetically pure than temperate trees
the tundra has a much shorter growing season because of the colder weather
all of the above are true
19
Which cell structure regulates stores the main genetic information for the cell?
ribosome
cell membrane
nucleus
mitochondria
20
Which principle is best demonstrated by the study of Peppered Moths in England?
Which trait is favored can change if the habitat changes
New traits that appear in a gene pool will always win out over old traits
Organisms can change when they want to in response to habitat change
A favored trait will remain regardless of changes in the habitat
21
The basic unit of life.
cell
tissue
system
organ
22
Which of the following distinguishes prokaryotic organisms from eukaryotic organisms?
only prokaryotic organisms can conduct photosynthesis
only eukaryotic organisms can conduct photosynthesis
prokaryotic organisms lack a nucleus and most organelles
eukaryotic organisms lack a nucleus and most organelles
23
The fossil record has demonstrated which of the following?
all of the above
many organisms have changed over time
the climates of many continents has changed over time
organisms that lacked genetic diversity to adjust to change went extinct
24
Cats: Long hair (H), short hair (h). Probability of a purebred short and a purebred long-hair having long-hair kittens?
50%
0%
100%
25%
25
This image demonstrates
sexual reproduction
asexual reproduction
endocytosis
exocytosis
26
Which organisms would not benefit from overfishing the large fish in this food web?
gulls and terns
eagles and ospreys
smaller fish
wading birds
27
What percentage of the offspring are purebred for a particular trait?
75
25
50
100
28
Which of the following could be used to distinguish an insect from an arachnid?
Any of those characteristics
number of body segments
wings vs. no wings
number of legs
29
Plants, animals, fungi, and bacteria are examples of ________________ elements.
biotic
heterotrophic
abiotic
autotrophic
30
Which of the following could help to distinguish a bee from a wasp?
number of wings
number of eyes
size
fur/hair vs no fur
31
750 acres of forest are cleared causing its owls to relocate to another area. How will the new area be affected?
The area will have an increase in birds
The new area will have a decrease in mice
Grasshopper populations will increase
The additional owls will have no effect on the food web of the new area
32
Able to make sugars for energy through the process of photosynthesis
autotrophs-producers
decomposers
heterotrophs-consumers
mollusks
33
Which best describes the parent listed on the top?
purebred dominant
hybrid dominant
heterozygous recessive
purebred recessive
34
Which systems collaborate most closely to ensure essential nutrients are provided for the cells of the organism?
excretory, circulatory
respiratory, digestive
digestive, excretory
circulatory, digestive
35
Which evidence would best support the belief that increased development adversely affects owls?
An improvement in the health of owls
An increase in the population of producers
A decrease in the owl population
An increase in owl populations
36
Which evidence has led many scientists to believe that birds are descendants of dinosaurs
birds have skeletons very similar to theropod dinosaurs
all of the above
many theropod dinosaur fossils show evidence of feathers
many ancient birds had small teeth like theropod dinosaurs
37
Structures found in plant cells but not animal cells:
ribosomes, mitochondria, cell membrane
nucleus, cell membrane, lysosome
cell wall, chloroplasts, central vacuole
central vacuole, ribosomes, nucleus
38
Which systems collaborate for the removal of solid waste from the body?
endocrine, circulatory, digestive
muscular, nervous, digestive
excretory, digestive, circulatory
digestive, respiratory, excretory
39
Which organism will be most affected if all mountain lions disappear from this area?
bats
snakes
hawks
antelope
40
Which cell structure regulates most of the functions of the cell?
nucleus
mitochondria
cell membrane
ribosome
41
Which cell structure regulates what enters and leaves the cell?
mitochondria
nucleus
ribosome
cell membrane
42
In a balanced natural ecosystem, which process determines the traits that will be passed on to offspring?
selective breeding
law of averages
artificial selection
natural selection
43
In what way is the sun's energy made available for use in a food web?
It is absorbed by producers
It is gathered through decomposition
It is absorbed by the earth's crust and relayed to unicellular organisms
It is absorbed by consumers
44
The eel gets its mouth cleaned, the cleaner shrimp gets an easy meal. This is an example of
mutualism
commensalism
parasitism
competition
45
Trout area adapted to cold, clear streams and lakes. Which of the following has contributed declining trout populations?
an increase in water temperatures due to global climate change
pollution and excessive run-off that fouls the water
Less snow melt to fill streams due to climate change
all of the above
46
Which systems collaborate most closely when a person is engaged in an athletic activity?
digestive, skeletal, muscular
excretory, muscular, digestive
nervous, digestive, skeletal
nervous, muscular, skeletal
47
What is the primary explanation for the diversity in bird beaks?
beaks have been naturally selected based on the foods the bird eats
all of the above
beaks are determined by the overall temperature of the bird's habitat
beaks are a product of selective breeding by humans
48
In cats long hair is dominant over short hair. What can we predict about offspring from two long-haired cats?
They will have short hair
They will most likely have long hair
They will all have long hair
They will have medium-length hair
49
Cell membranes are semi-permeable, which means
only molecules of a certain size can pass through the membrane
molecules are able to pass out of the cell but not into
no molecules are able to pass into or out of the membrane
molecules are able to pass into the cell but not out of
50
Considered the father of the study of evolution
Curie
Linnaeus
Mendel
Darwin
51
What do Giant Redwood trees, Blue Whales, Golden Mushrooms, and ticks have in common?
all biotic factors
all of the above
all multicellular
all in Domain Eukaryota
52
How will they new plants compare to the main plant?
they will genetically uniform (identical)
we cannot determine from this image
they will be genetically different
they will share some of the same genes
53
In sunflowers, the tall variation (T) is dominant over the short variation (t). What percentage will be tall?
25
75
100
50
54
In a flock of sheep where 30 have white wool and 4 have black while, what can we infer?
black wool is dominant over white
We are unable to determine which color wool is dominant
white wool is dominant over black
white and black wool are codominant
55
Level of organization shown here.
system
organ
cell
tissue
56
Which cell structure provides energy for a cell?
nucleus
cell membrane
ribosome
mitochondria
57
A botanist collects genetic data on a species of fern in a small area and finds the plants are all genetically identical
this suggests they are the result of endocytosis
this suggests they are the result of sexual reproduction
This suggests they are the result of asexual reproduction
this suggest they are all different species
58
Which of the following accurately identifies the levels of organization?
class-order-genus-family-kingdom-phylum
kingdom-phylum-order-class-genus-family-species
kingdom-class-family-order-species-genus
kingdom-phylum-class-order-family-genus-species
59
Our coastal salt marshes have what important role?
They protect our coastline from severe storm damage
They serve as nurseries for many species of marine animals
They filter pollutants from the water
all of these
60
Biome dominated by conifers such as spruce, moose, wolverines, snowshoe hares, and red squirrels
Tropical Rainforest
Taiga/Boreal Forest
Temperate Deciduous Forest
All of the above meet this profile
61
Bison were bred with cattle to produce animals that produce good meat in a wide range of temps. This is an example of
asexual reproduction
binary fission
all of the above
selective breeding
62
Heavy winds, flooding, oxygen, soil, temperature, and altitude are examples of ________ factors
abiotic
mutualistic
commensalistic
biotic
63
Snowshoe hares turn white in winter. If global climate change results in less snow, how might that affect the hares?
With less snow, they will have difficulty finding food
With less snow in winter they will be more visible to predators
With less snow in winter, they will be better camouflaged
All of the above
64
Genetic diversity
decreases a species' ability to adapt to changes in the ecosystem
improves a species' ability to adapt to changes in the ecosystem
Has no effect on a species' ability to adapt to habitat changes
Rarely occurs in nature
65
Which two systems are most immediately affected by the condition show in this image?
respiratory, digestive
circulatory, muscular
immune, circulatory
circulatory, excretory
66
What were the genotypes of the parent organisms?
Any of those combinations would work
AA, Aa
AA, AA
Aa, Aa
67
Which two systems collaborate to make sure cells get oxygen and have carbon dioxide removed?
excretory, circulatory
respiratory, circulatory
excretory, digestive
digestive, respiratory
68
These two animals are of the same species. What is the explanation for the many differences in appearance?
They each evolved differently due to differences in their habitats
They are a process of selective breeding by humans
They are in different kingdoms
They have different ancestors
69
Which genetic variation in a whale would give it an advantage over other whales when whales are hunted by humans?
A larger mouth for gathering food
Increase lung capacity to dive deeper and stay submerged longer
All variations would be an advantage against whaling
increased blubber to help it float at the surface more easily
70
Letters that represent the two forms of the allele in an allele pair
genotype
parasite
phenotype
monocyte
71
Which two factors have the most influence on the level of biodiversity in an ecosystem?
longitude and type of soil
proximity to mountains
sunlight and precipitation
proximity to bodies of water
72
Snowshoe hares turn white in winter. If global climate change results in less snow, how might that affect the hares?
Natural selection will favor an increase in hare size
Natural selection will favor hares that are brown for more of the year
All of the above
Natural selection will favor an increase of rabbits that are always white
73
What pattern appears in this graph?
The effects of changes in foxes or rabbits on the other are delayed
an increase in rabbits leads to an increase in foxes
An increase in foxes leads to a decrease in rabbits
All of the above
74
Level of organization formed by tissues that are organized into structures that carry out a specific life function(s).
system
cell
tissue
organ
75
Which system is responsible for the removal of a type of waste from the body?
digestive
all of these
excretory
respiratory
76
What do roses, elephants, mushrooms, and earthworms have in common?
They are all eukaryotic
They are all unicellular
They are all prokaryotic
They are all autotrophic
77
Because autotrophic cells have chloroplasts, what can they do that animals and fungi cannot do?
break down or decompose organic material
reproduce asexually
reproduce sexually
Make sugars for energy through photosynthesis
78
Level of organization seen here.
organ
system
cell
tissue
79
Asthma is caused by a malfunction of certain structures that are part of the _____________________ system.
excretory
digestive
skeletal
muscular
80
Biome where many broad-leaf trees drop their leaves in the winter and become dormant.
Temperate Deciduous Forest
Taiga/Boreal Forest
Tropical Grassland
Tropical Rainforest
81
Cats: Long hair (H), short hair (h). Probability of a hybrid long and a purebred short-hair having short-hair kittens?
100%
50%
25%
0%
82
An organism's genotype refers to
all the genes in an organism, expressed and not expressed
only the genes that are expressed
only the genes that are unique, having no match to pair with
only the genes that are in pairs
83
Level of organization seen here
cell
system
tissue
organ
84
In what way do the organelles of a cell compare to the organs of a complex organism?
Both are prokaryotic
Both form tissues
Both carry out important life functions
Both form systems
85
The kingdoms Monera (bacteria and cyanobacteria) and Archaea have what in common?
are the only two prokaryotic kingdoms
are the only two heterotrophic kingdoms
are the only two autotrophic kingdoms
are the only two eukarytoic kingdoms
86
The expressed or visible trait
genotype
phenotype
monocyte
parasite
87
A group of joined cells that are similar in structure and function.
community
population
organ
tissue
88
What is the phenotype for the parent listed on the side?
heterozygous
green
hybrid
gg
89
Wild mustard is the ancestor of several modern crops. What process led to this differentiation?
asexual reproduction
all of the above
cross-breeding wild mustard with entirely different plants
selective breeding
90
Fossils are primarily found in _______________ rock.
all of the above
sedimentary
metamorphic
igneous
91
An organism's phenotype refers to
only the genes that are expressed, that "won out"
all the genes in an organism, expressed and not expressed
only the genes that are in pairs
only the genes that are unique, having no match to pair with
92
Level of organization seen here.
cell
system
organ
tissue
93
While driving through the desert, Jesse noticed that there were a lot of plants but no animals. Why?
most desert animals are nocturnal
all the animals migrated to a cooler location
deserts do not support animals
all of the above
94
Mr. Hodgdon noticed after spraying weeds that some of the weeds did not die this time. He sprayed them all. What's up?
genetic diversity in the weeds gave some resistance to the weed-killer
any of the above
the weeds cross-bred with other plants that also lacked resistance
The weed-killer expired while he was using it
